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合成N -正辛基己内酰胺 ,以甲苯为稀释剂 ,研究了N -正辛基己内酰胺从盐酸介质中萃取盐酸和Fe3+ 的机理。在1 0mol·L- 1 酸度下 ,OCLA和HCl主要形成OCLA·HCl加合物。OCLA和Fe3+ 形成的萃合物组成为HFeCl4 ·3OCLA ,萃取反应的表观平衡常数为 88 42± 0 3 0mol- 4·L4 ,热焓为 -10 94± 0 0 4kJ·mol- 1 ,在萃合物中OCLA的羰基参与了配位
N - octylcaprolactam was synthesized and the mechanism of N - octylcaprolactam extraction of hydrochloric acid and Fe3 + from hydrochloric acid was studied using toluene as diluent. OCLA and HCl mainly formed OCLA · HCl adduct under the acidity of 10 mol·L -1. The complex formed by OCLA and Fe3 + has the composition of HFeCl4 · 3OCLA. The apparent equilibrium constant of the extraction reaction is 88 42 ± 0 3 0 mol- 4 · L4 and the enthalpy is -10 94 ± 0 0 4kJ · mol- The carbonyl group of OCLA in the compound is involved in coordination